This is my guide to get an eGPU setup working on a Lenovo ThinkPad T530 laptop with Windows 10. What’s an eGPU? GPU stands for Graphics Processing Unit, also referred to as a video or graphics card. The “e” stands for external. In a nutshell, it’s attaching a video card to a device that doesn’t have a dedicated slot for it such as a laptop by means of another physical port – ExpressCard, mPCIe, M.2 or Thunderbolt.